package com.itheima.StringTist;

public class StringBuilderDemo5 {
    public static void main(String[] args) {
        int []arr={1,2,3};
        String s = arrTostring(arr);
        System.out.println(s);
    }
    public static String arrTostring(int []arr){
        StringBuilder sb= new StringBuilder();
        sb.append("[");
        for (int i = 0; i < arr.length; i++) {
            if (i==arr.length-1){
                sb.append(arr[i]);
            }else {
                sb.append(arr[i]).append(", ");
            }
        }
        sb.append("]");
        String s = sb.toString();
        return s;
    }
}
